feat: StatelessValidatorMultiPlexer

[highskore]

No description provided.

[Copilot]

Pull Request Overview

This PR introduces a new StatelessValidatorMultiPlexer module that enables multiple stateless validators to be used together in a single validation operation. The implementation allows for composition of different validator types (e.g., ECDSA and WebAuthn) where all validators must pass for the overall validation to succeed.

• Implements a new multiplexer contract that validates signatures by calling multiple stateless validators
• Adds comprehensive test coverage for various validation scenarios including edge cases
• Updates Solidity version from 0.8.25 to 0.8.28 across the project

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
src/StatelessValidatorMultiPlexer/StatelessValidatorMultiPlexer.sol	Core multiplexer implementation with signature validation logic
test/StatelessValidatorMultiPlexer/StatelessValidatorMultiPlexer.sol	Comprehensive test suite covering success/failure scenarios
foundry.toml	Updates Solidity compiler version to 0.8.28
.vscode/settings.json	Configures VS Code to use Solidity 0.8.28

Comments suppressed due to low confidence (2)

test/StatelessValidatorMultiPlexer/StatelessValidatorMultiPlexer.sol:124

• The test test_OnInstall only asserts assertTrue(true) which provides no meaningful validation. Consider testing actual behavior or state changes.

        assertTrue(true);

test/StatelessValidatorMultiPlexer/StatelessValidatorMultiPlexer.sol:129

• The test test_OnUninstall only asserts assertTrue(true) which provides no meaningful validation. Consider testing actual behavior or state changes.

        assertTrue(true);